49893710161 has 9 divisors (see below), whose sum is σ = 51287129649. Its totient is φ = 48537190224.

The previous prime is 49893710143. The next prime is 49893710171. The reversal of 49893710161 is 16101739894.

The square root of 49893710161 is 223369.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 822599761 + 49071110400 = 28681^2 + 221520^2 .

It is not a de Polignac number, because 49893710161 - 2¹¹ = 49893708113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49893710171) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8261635 + ... + 8267671.

It is an arithmetic number, because the mean of its divisors is an integer number (5698569961).

Almost surely, 2^49893710161 is an apocalyptic number.

49893710161 is the 223369-th square number.

49893710161 is the 111685-th centered octagonal number.

It is an amenable number.

49893710161 is a deficient number, since it is larger than the sum of its proper divisors (1393419488).

49893710161 is an frugal number, since it uses more digits than its factorization.

49893710161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148 (or 6074 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

Multiplying 49893710161 by its sum of digits (49), we get a square (2444791797889 = 1563583²).

The spelling of 49893710161 in words is "forty-nine billion, eight hundred ninety-three million, seven hundred ten thousand, one hundred sixty-one".